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|1. (WO2018122570) COMPOSITIONS TO STABILIZE ASPHALTENES IN PETROLEUM FLUIDS|
|Applicants:||STEPAN EUROPE S.A.S.
SCHLUMBERGER NORGE AS
|Inventors:||COLE, Rachael Anne
DESHPANDE, Pradyumna Avinash
KHANDEKAR, Chandrashekhar Yeshwant
REGNAULT DE LA MOTHE, Loic
|Title:||COMPOSITIONS TO STABILIZE ASPHALTENES IN PETROLEUM FLUIDS|
Compositions may include those of the formula: (I) wherein R1 is an alkyl chain having a carbon number in the range of greater than 40 to 200, R2 is a multiester, R3 is hydrogen, an ion, or an alkyl chain having a carbon number in the range of 1 to 200, m is an integer selected from 0 to 4, and n is an integer selected from the range of 0 to 4, wherein the sum of m and n is 1 or greater. Compositions may include a reaction product of a polyisobutylene-substituted succinic anhydride and a hydroxy- functional dendrimer, wherein the molar ratio of polyisobutylene-substituted succinic anhydride to hydroxy-functional dendrimer is within the range of 10: 1 to 30: 1.